Azure Fundamentals- AZ-900 Questions and Answers

Azure Fundamentals- AZ-900 Questions and Answers Types of Cloud Servers -Dedicated Server -Virtual Private Server -Shared Hosting -Cloud Hosting Dedicated Server One physical machine dedicated to one business; Runs a single web app/site -Very Expensive, High Maintenance, High Security Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Brainpower Read More Virtual Private Server One physical machine dedicated to one business; Machine is virtualized into sub-machines, Runs multiple web apps/sites Shared Hosting One machine shared by hundreds of businesses; Relies on most tenants underutilizing their resources -Very Cheap, Very Limited Cloud Hosting Multiple physical machines that act as one system; System is abstracted into multiple cloud services -Flexible, Scalable, Secure, Cost-Effective, High Configurability Common Cloud Services Compute, Storage, Networking, Databases (CSND) Compute (Common Cloud Service) Virtual computer that can run applications, programs, and code Storage (Common Cloud Service) Virtual hard drives where you can store files Networking (Common Cloud Service) Virtual network that can define internet connections or network isolations Databases (Common Cloud Service) Virtual database for storing reporting data or a database for general purpose web-apps Benefits of Cloud Computing -Cost-Effective -Global Ability -Secure -Reliable -Scalable -Elastic -Current/Up to Date Types of Cloud Computing Software as a Service (SaaS) Platform as a Service (PaaS) Infrastructure as a Service (IaaS) SaaS (Type of Cloud Computing) -Mainly for customers -Run and managed by the service provider -Don't need to worry about how the service is maintained; it just works and remains available -i.e. Salesforce, Office 365, Gmail PaaS (Type of Cloud Computing) -Mainly for developers -Focus on deployment and management of your apps -Don't need to worry about provisioning, configuring, or understanding the hardware or OS -i.e. Heroku, Google App Engine IaaS (Type of Cloud Computing) -Mainly for administrators -The basic building blocks for cloud IT; provides access to networking features, computers, and data storage space -Don't need to worry about IT staff, datacenters, or hardware -Can have SaaS and PaaS on top of it -i.e. Microsoft Azure, AWS, Oracle Cloud On-Premise Cloud Computing Responsibilities Customer's Responsibilities: -Applications -Data -Runtime -Middleware -OS -Virtualization -Servers -Storage -Networking IaaS Cloud Computing Responsibilities Customer's Responsibilities: Applications Data Runtime Middleware OS CSP's Responsibilities: Virtualization Servers Storage Networking PaaS Cloud Computing Responsibilities Customer's Responsibilities: Applications Data CSP's Responsibilities: Runtime Middleware OS Virtualization Servers Storage Networking SaaS Cloud Computing Responsibilities Customer's Responsibilities: Configuration CSP's Responsibilities: Applications Data Runtime Middleware OS Virtualization Servers Storage Networking Azure's Deployment Models Public Cloud, Private Cloud, Hybrid Public Cloud (Azure Deployment Model) Everything is built on the Cloud Provider (aka Cloud Native) i.e. Network on Azure with a virtual machine running and a database running Private Cloud (Azure Deployment Model) Everything is built on the company's datacenters (aka On-Premise) i.e. An opensource software that mimics Azure; has a virtual machine and database running (example: OpenStack) Hybrid (Azure Deployment Model) Both Cloud Service Provider and On-Premise used (they are connected together) i.e. ExpressRoute connecting the two networks On-Premise (CAPEX): Total Cost of Ownership Software license fees Implementation Configuration Training Physical Security Hardware IT Personal Maintenance Azure (OPEX): Total Cost of Ownership Subscription fees Implementation Configuration Training Moving from On-Premise (CAPEX) to Azure (OPEX) Average savings of 75% CAPEX (On-Premise) Spending money upfront on physical infrastructure; Deducting that expense from your tax bill over time; You have to guess upfront what you plan to spend Expenses: Server costs (computers) Storage costs (hard drives) Network costs (routers, cables, switches) Backup and Archive costs Disaster Recovery costs Datacenter costs (renting, cooling, physical security) Technical Personal OPEX (Azure) Costs associated with an On-Premise datacenter that has shifted the cost to the service provider; Customer only has to be concerned with non-physical costs; You can try a product of service without investing in equipment Expenses: Leasing software and customizing features Training employees in cloud services Paying for cloud support Billing based on cloud metrics (compute usage, storage usage)